was a district located in Niigata Prefecture, Japan.
As of 2003, the district had an estimated population of 5,549 with a density of 110.91 persons per km2. The total area was 357.29 km2.
Towns and villages Prior to its dissolution on 3 March 2010, the district consisted of only one village:
Kawaguchi
Notes
History
On 1954 - The areas now covering Ojiya were merged and elevated to city status.
District Timeline
Recent mergers On November 1, 2004 - The towns of Horinouchi and Koide, and the villages of Hirokami, Irihirose, Sumon and Yunotani were merged to form the city of Uonuma. On March 31, 2010 - The town of Kawaguchi was merged into the expanded city of Nagaoka. Therefore, Kitauonuma District was dissolved as the result of this merger.
References
See also List of dissolved districts of Japan